(57) Disclosed herein is a mold for manufacturing a housing (20) of a hydraulic unit of
an anti-lock brake system for vehicles. The housing has a plurality of bores (21-24)
formed therein such that components, such as a plurality of valves (12,13), accumulators
(14,17), hydraulic pumps (15), and a driving motor(16), and a plurality of connection
pipes are mounted to the housing through the bores. The mold (30) comprises a lower
mold (33) mounted in a stationary frame (31) for defining a housing forming space
where the lower part and side parts of the housing are formed, an upper mold (34)
mounted in a movable frame (32) disposed on the stationary frame (31) such that the
movable frame (32) is vertically moved a predetermined distance, the upper mold (34)
covering the upper part of the housing forming space of the lower mold (33) to form
the upper part of the housing, lower cores (41) attached to the lower mold (33) such
that the lower cores (41) are protruded from the inner lower surface of the lower
mold (33) to form the lower-side bores (21,22) of the housing (30), an upper core
(42) attached to the upper mold (34) for forming the upper-side bores of the housing,
and a plurality of side cores (44,45,46) disposed at the lower mold (33) such that
the side cores (44,45,46) move into and out of the housing forming space defined in
the lower mold (33) through the lower mold in four directions to form the bores provided
at the four sides of the housing (20). With the mold according to the present invention,
a housing (20) having a complicated structure is manufactured through injection molding
of a resin material. Consequently, the housing (20) is easily manufactured with increased
productivity as compared with the conventional method of manufacturing the housing
through an aluminum cutting process. Furthermore, the manufacturing costs of the housing
are reduced.
|
|
